CVE-2026-43911 — Vaultwarden is a Bitwarden-compatible server written in
CVE-2026-43911 — Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.35.5, refresh tokens are not invalidated when the user's security_stamp is rotated by some security-sensitive operations (password change, KDF change, key rotation, email change, org admin password reset, emerg
What This Means For You
- If your environment is affected by CWE-613, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-43911 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
6 rules · 6 SIEM formats6 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
Web Application Exploitation Attempt — CVE-2026-43911
title: Web Application Exploitation Attempt — CVE-2026-43911
id: scw-2026-05-11-1
status: experimental
level: high
description: |
Detects common exploitation patterns targeting web applications. Review CVE-2026-43911 advisories for specific indicators.
author: SCW Feed Engine (auto-generated)
date: 2026-05-11
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-43911/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri-query|contains:
- '..'
- 'SELECT'
- 'UNION'
- '<script'
- 'cmd='
- '/etc/passwd'
condition: selection
falsepositives:
- Legitimate activity from CVE-2026-43911
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-43911 | vulnerability | CVE-2026-43911 |
| CWE-613 | weakness | CWE-613 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 12, 2026 at 02:20 UTC |
This content was curated and summarized by Shimi's Cyber World for informational purposes. It is not copied or republished in full. All intellectual property rights remain with the original author and source.
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